Music-leaf turner.



A. K. L. BLAQK. MUSIC LEAF TURNER.

APPLICATION FILED JUNE 1, 191D.

000904, Patented 0ct.24,`1911.

#jm m.

iiffzsmmmmsmw T Mgg A..K.L.BLA0K, MUSIC LEAF TURNER. APPLICATION FILEDJUNE'l, 1910.

tlg-006,904.

2 SHEETS-SHEET 2v.

Patented. 0st. 24, 1911.

ABRAHAM K.-L. BLACK, or sUNNYsIDE, WASHINGTON.

MUSIC-LEAF TURNER.

Specification of Letters Patent. Patented Oct. 24, 1911.

Application filed J'une 1, 1910. Serial No. 564,366.

To all whom it may concern.'

Be it known that I, ABRAHAM K.. L.

BLACK, a citizen of the United States, resid-` jects the provision of adevice of that kind adapted to be applied to the rack of a piano, organor analogous musical instrument, and when so applied to present a neatand attractive appearance.

Another object is the provision of a music leaic turner including a pairof relatively movable push-rods connected with the leaf turner, theconstruction being such that by alternately pressing said push-rods theleaf turner will be moved in opposite directions.

lVith these and other objects in view, which will more fully hereinafterappear, the present invention consists in certain novel details ofconstruction and arrangement of parts, hereinafter fully described,illustrated in the accompanying drawings, and more particularly pointedout in the appended claim; it being understood that various changes inthe form, proportion, size, and minor details of the device may be made,within the scope of the appended claim, without departing from thespirit or sacrificing any of the advantages of the invention.

In the accompanying drawings forming part of the specification; Figure lis a front elevation of a music rack provided with my' improved device.Fig.v 2 is a rear elevation 1 thereof. Fig. 3 is a sectional plan viewapproxin'latcly on the line 3 3 ot Fig. 2. Fig. l is a bottom plan View.Fig. is a sectional end View on the line 5 5 of Fig. 2.

Similar numerals of reference are em -3 ployed to designatecorresponding parts throughout.

The rack is designated by the numeral 5 and adjacent to its oppositeends is provided with clips G and 7, said clips being each preferablyformed of a single piece of steel wire the opposite end portions ofwhich are bent laterally and inserted into the outer :l'ace ot' therack, and when so inserted a space will exist between the body of theclip and face of the rack sufficient to receive the covers of a musicsheetor book when the said vmusic sheet or book is open. A clip 8 ispositioned at the middle of the rack and is formed similar to the clips6 and 7 and is designed to bear on the middle of an open music book andcoperating with the end clips to prevent displacement of the said book.Extending inwardly from-the medial portion of the upper side of the rackis an openin the lower end of which termihates in a ongitudinal slot oropening 9 positioned adjacent to the lower side of the rack. Looselyfitted in the said opening is a shaft 10, the lower end of which isjournaled i-n an opening in the middle portion of the lower side wall ofthe slot 9.

A leaf turning frame is in the present instance shown to be formed ofasingle piece of wire bent into a U-shape the opposite limbs of which aredesignated bythe numerals 11 and 12. The upper of these limbs isprovided at one end with a flattened head 13, having a central openingto snugly res ceive the upper end of the shaft 10.. The lower limb l2 isterminally provided with a divided head 14, between the sides of whichis fixedly secured a pinion 15. The divided head 14 and pinion 15 arearranged in the oblong slot 9, the said head and pinion being providedwith alining openings to snugly vreceive the lower end portion ot' theshaft 10. With this construction it will be manifest when the shaft isturned the leaf turner will be turned likewise.

While I have shownbut one leaf turner and a mechanism for operating thesame, it must be understood, however, that I am not to be limited tothisgspecific number, since it y will be readily understood, from whatwill appear later, how a greater number of leaf turner-s and parts foroperating the same, may be employed without departing from the spirit,or sacrificing any of the advanta es of the invention.

' 5y reference now to Fig. 2 it will be seen that arranged on the inneror rear l'ace of the rack 5 is a fra-ine, the opposite longitudinalsides of which extend longitudinally of the rack and are designated bythe numerals 1G and 17. The sides 16 and i7 are arranged beyond theopposite sides of the slot f) their opposite ends' being connectedtogether by the end pieces 18 and i9. lo sitioned between the sides 16and 17 and at the opposite ends of the slot t) are plates 20 and 21extending at right angles to the inner or rear face of the rack 5 andcorre- -lri ings it will he seen that guide openings are formed in theend pieces 18 and 19 and in.

alinement w'th the raclrba'r 22, and slidingly titte-d in these uideopenings are the outer ends of connecting rods 23 and 24, the inner endsof which are loosely connected to the opposite ends of the rack bar 22.Jourvnaled adjacent to the opposite ends of the sides and 17,' andadjacent to tlie outer surfaces of said sides are shafts 25 and 26.rlhe'medial portions of these shafts are provided with crank arms 27 and28, the said crank arms 27 and 28 extending at right angles to themedial portions of the shaft and having at their free ends inwardly eX-tending slots which receive lateralstuds 29 and 30, extending from themedial portions of the connecting rods 23 and 24. The lower ends of theshafts 25 and 26 extend belowv the lower surface' of the lower side 17of the frame and lhave fixedly secured thereto crank arms 31 and 32,said crank arms 31 and being positioned on the shafts 25 and 26 atapproximately 270 fr in the crank arms 27 and 28. rlhe cranlr arms 31and i2-extend approximately in length to e crank arms 27 and 28 andextend to nits midway between the shafts 25 and 2G d center of the lowerside l? of the frame, en d adjacent to their terminals are provided withoutwardly extending crank pins 33 and pairlof linksv are designated bythe numerals 35 and 36, the inner ends of said links being provided withopenings for the reception of a pivot pin' 38, extending through thecenter of the lower side 17 of the frame. The outer ends of the linksare .fided with longitudinal slots 38 and 39,

' ich receive the cranks pins and 34, as rly shown in the drawings.Formed in teli: and adjacent to the lower side are a pair of spacedopenings in 'alinement, with the medial portions of the links 35 and 36,and slidingly fitted in these openings are push-rods 40 and 41, theinner ends of which are pivoted to the medial portions of the links 35and 36 and the outer ends of which are provided with buttons 42' and 43.With this construction itwill be manifest when the parts are positionedas shown in the drawings and the leaf turner is on the left of the rack,that by forcing the push-rod to the right inwardly, will resuit inrocking the shafts 25 and 26, wherebythe opposite push-rod will moveoutwardly and at the Sametime the rack bar will be reciprocated, thusturning the leaf turner to the opposite side of the rack. It will hemanifest when the parts are in this position and it is desired to' turnthe leaf to its original position the salme can lbe done by depressingthe push-rod on the left, whereupon the parts will resumeV theiroriginal positions. A

From the foregoing, it is evident that l have provided a device which iscomparatively simple in structure and inexpensive in manufacture,embodying few parts and these so arranged that the danger of derangement will be reduced to a minimum.

. in a .music leaf turner, the combination with a. frame, and a leafturning device; of a horizontally reciprocating vrack bar, a

pinion connected with the leaf turning device and engaging the rack,connecting rods slidingly fitted in the frame and connected each at'oneend to the rack har, a pair of oppositely disposed vertical shaftsjournaled in the frame, crank arms at theup per and lower ends of saidshafts, the upper of said crank arms being connected at one end to thesaid connecting rods, a pair of links pivoted at oneend to the frame4and pivotally connected at their opposite ends to the lower` of saidcrank arms, and a pair of relatively movable reciprocating push rodsconnected to the'links.

In testimony whereof I afliir my signature in presence of two witnesses.

JAMES M. DUNN, FREEMAN L. BALL.

